IPStack - Fixed TCP checksuming

[tpg/acess2.git] / Modules / IPStack / ipv4.c

diff --git a/Modules/IPStack/ipv4.c b/Modules/IPStack/ipv4.c
index b77581e..6c387cc 100644 (file)
--- a/Modules/IPStack/ipv4.c
+++ b/Modules/IPStack/ipv4.c
@@ -317,12 +317,15 @@ Uint16 IPv4_Checksum(const void *Buf, int Size)
        const Uint16    *arr = Buf;
         int    i;
        
-       Size = (Size + 1) >> 1; // 16-bit word count
-       for(i = 0; i < Size; i++ )
+       // Sum all whole words
+       for(i = 0; i < Size/2; i++ )
        {
                Uint16  val = ntohs(arr[i]);
                sum += val;
        }
+       // Add the tail word
+//     if( i*2 != Size )
+//             sum += arr[i]&0xFF;
        
        // Apply one's complement
        while (sum >> 16)